Delay tolerant networks rely on the mobility of their nodes and sequences of their contacts to
transfer data. Proposed data forwarding mechanisms represent different trade offs between
data transfer speed and network resource consumption, most of them assuming perfect
cooperation among network nodes. Nevertheless, nodes may exhibit selfish behavior, in
particular when they are constrained with respect to energy, computational power, and/or
storage space. In this paper, we analytically assess the performance of two popular data …

The main principle behind the working of delay tolerant networks (DTN) is the mobility of the
nodes along with their contact sequences for exchanging data. Nodes which are a part of
the DTN network can behave selfishly due to network reservation policy, especially when
constrained to energy or storage space. Several forwarding protocols exist for spreading
data but our focus is on the performance of popular data relaying protocols namely epidemic
routing and two hop routing protocol in a situation where nodes exhibit various degrees of …